The best thing to buy is tire patching kit, needle nose pliers and a portable air compressor you can usually find the nail with the tire still attached and plug it and pump it back up, even my wife can do it!

Maybe what most people lack when changing a tire is practice: Where's the jack/iron/tire? Where do I put the jack under the car? Why'd I park in loose soil? Which way do I turn the nuts? How do I leave a message for my loved ones after I'm killed by oncoming traffic?

A cool tool can be any book, gadget, software, video, map, hardware, material, or website that is tried and true. All reviews on this site are written by readers who have actually used the tool and others like it. Items can be either old or new as long as they are wonderful. We post things we like and ignore the rest. Suggestions for tools much better than what is recommended here are always wanted.